Financing Receivables (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) agreement	Dec. 31, 2015 USD ($) agreement
Schedule of Financing Receivables [Line Items]
Financing receivable	$ 264	$ 264
Number of Foninvemem Agreements | agreement	3
Foninvemem Agreement, collection period		10 years
Number of Foninvemem Agreements with active collections | agreement		2
ARGENTINA
Schedule of Financing Receivables [Line Items]
Financing receivable	$ 236	$ 237
Derivative Assets, Gross	255	292
UNITED STATES
Schedule of Financing Receivables [Line Items]
Financing receivable	20	20
Brazil
Schedule of Financing Receivables [Line Items]
Financing receivable	$ 8	$ 7